Chef

Configuration Management

The practice of systematically managing and maintaining the consistency of system configurations.

Ansible

An open-source automation tool for configuration management, application deployment, and task automation.

Puppet

A configuration management tool that automates the provisioning and management of infrastructure.

Immutable Infrastructure

An approach where infrastructure components are never modified after deployment but replaced entirely with updated versions.

GitOps

An operational framework using Git repositories as the single source of truth for declarative infrastructure and applications.

The average time between system failures, measuring reliability and availability.

A deployment strategy that gradually replaces instances of the previous version with the new version.

A design approach where a system continues to operate with reduced functionality when components fail.

Adding more machines or nodes to a system to handle increased load.

The automatic detection of devices and services on a network, enabling dynamic service-to-service communication.

Increasing the resources (CPU, RAM, storage) of an existing machine to handle more load.

A set of practices combining software development and IT operations to shorten the development lifecycle and deliver continuous value.

A quantitative measure of some aspect of the level of service being provided.